Red Flag

A race is red-flagged when any accident or any other
incident plays spoilsports. The solid red flag is displayed when
conditions are considered unsafe to continue the race or practice
session. The cars are directed to drive to pit road, or to stop at a
specific spot. Several hazards could prompt series officials to red flag
a race. The hazards could be like rain, darkness, a blocked course, a
car on fire, or a devastating multi-car crash.

Incidents of cars red-flagged in F1 since 1990 have been mentioned
here.

Season

Race

Reason of Red Flag

Post Red Flag

2007

European

Rain and accidents

The race was restarted behind the safety car.

2003

Brazilian

Rain and accidents

Most of the race distance was covered. So Giancarlo Fisichella
was declared winner.

2001

Belgian

Accident

Race restarted with Michael Schumacher on pole.

2001

German

Accident

Race restarted with with Juan Pablo Montoya on pole.

2000

Monaco

Traffic

Race restarted with Michael Schumacher on pole.

1999

British

Accident

Race restarted with Mika Häkkinen on pole.

1998

Belgian

Rain and accident

Race restarted with Mika Häkkinen on pole.

1998

French

Car stalled

Race restarted with Mika Häkkinen on pole.

1998

Canadian

Accident

Race restarted with David Coulthard on pole.

1997

Canadian

Accident

Most of the race distance was covered. So Michael Schumacher
was declared winner.